Mine the prop with hydraulic, 3 tons, 5 tons, 8 tons of prop, 3 t 5 t 8 t l column device 
 HH1-2 back to the column device is specifically for the recovery of coal mine into a backplane single prop, buried metal roof beams and other devices designed to pull apparatus can also be used as a coal face pull operation, lifting, etc. job. 
 The back of the column device with a compact, light weight, fast drawing, and effortless operation, and security features. After extensive validation, twice as high than the original prop device efficiency, half of the operation and effort, welcomed by the miners. 
 The product can also be used with a large bundle of goods and braking. 
 HH2-2 type back to the column is our company design and manufacture a high-efficiency multi-purpose coal mine portable lifting equipment. It buried underground metal pillars and other buried devices retracement of a variety of different angles. Apply for the retracement of mining than 1 m high, general mining, blasting mining, as well as high-grade mining face of the pillar, but also as an auxiliary tool in the coal face pulling, lifting other heavy loads. 
 The product has the following characteristics: 
 (I) safe, reliable, durable; 
 (Ii) easy operation and maintenance; 
 (Iii) high strength, small size, light weight, easy to carry; 
 (Iv) The pulling force handle force and high efficiency.